The time it takes the Earth to rotate once is called a day (24 hours). The actual rotation time is a little less, about 23 hours and 56 minutes. But the solar day is longer, almost exactly 24 hours, because of the distance the Earth moves in its orbit around the Sun.
Connective tissue is present in all muscles as fascia. Enclosing each muscle is a layer of connective tissue known as the epimysium; enclosing each fascicle is a layer called the perimysium, and enclosing each muscle fiber is a layer of connective tissue called the endomysium.t is one of three major muscle types, the others being cardiac muscle and smooth muscle. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons. Skeletal muscle is made up of individual muscle cells or myocytes, known as muscle fibers.
Connective tissue from this outer sheath extends into the body of the muscle, subdividing it into columns, or fascicles (these are the strings in stringy meat). Each of these fascicles is thus surrounded by its own connective tissue sheath, which is known as the perimysium (peri = around).Dissection of a muscle fascicle under a microscope reveals that it, in turn, is composed of many muscle fibers, or myofibers.ach is surrounded by a plasma membrane, or sarcolemma, enveloped by a thin connective tissue layer called an endomy-sium (fig. 12.1). Since the connective tissue of the tendons, epimysium, perimysium, and endomysium is continuous, muscle fibers do not normally pull out of the tendons when they contract.